E221SD1V4LE Equivalent & Substitute Parts

Part Overview

The E221SD1V4LE is a pushbutton switch manufactured by C&K, featuring DPDT (Double Pole Double Throw) circuitry with On-Momentary switching function. This component is rated for 1A at 120V AC and 28V DC, with a through-hole mounting configuration and round plunger actuator. The part is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design implementations where legacy compatibility is required.

Substiute Parts

E221SD1V4LE

C&KIn Stock: 902E221SD1V4LE Datasheet

Current PartRFQ

E221SD1V4RE

C&KIn Stock: 929E221SD1V4RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the E221SD1V4LE is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: DPDT only
• Switch Function: On-Momentary operation
• Current Rating: 1A (AC/DC)
• Voltage Ratings: 120V AC and 28V DC minimum
• Mounting Type: Through Hole
• Actuator Type: Round, Plunger
• Termination Style: PC Pin
• Operating Temperature Range: -30°C to 75°C minimum
• Electrical Life: 60,000 Cycles minimum
• Manufacturer: C&K (same series preferred)

The E221SD1V4RE qualifies as a direct substitute based on identical electrical specifications, mechanical configuration, and environmental ratings. The primary distinction is product status: E221SD1V4RE is active production, whereas E221SD1V4LE is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The E221SD1V4RE is the direct equivalent for E221SD1V4LE replacement. Both components share identical electrical performance specifications, mechanical dimensions, and environmental operating parameters. The E221SD1V4RE is preferred for new procurement due to active production status, ensuring supply chain continuity and availability.

Both parts maintain full compliance with RoHS and REACH regulations. The E221SD1V4RE carries RoHS Compliant certification, while the E221SD1V4LE carries ROHS3 Compliant certification; both satisfy current regulatory requirements. ECCN classification EAR99 applies to both variants.

For applications requiring the E221SD1V4LE, transition to E221SD1V4RE without design modification. Pin configuration, electrical ratings, and mechanical fit are identical.

Frequently Asked Questions (FAQ)

Q: Can E221SD1V4RE directly replace E221SD1V4LE without PCB modification?

A: Yes. Both components feature identical PC Pin termination, through-hole mounting configuration, and mechanical dimensions. No PCB layout changes are required.

Q: Are the electrical specifications identical between these two parts?

A: Yes. Both components are rated for 1A at 120V AC and 28V DC, with DPDT circuitry and On-Momentary switching function. Electrical life is 60,000 cycles for both.

Q: What is the difference between ROHS3 Compliant and RoHS Compliant designations?

A: Both designations indicate compliance with RoHS regulations. ROHS3 refers to RoHS Directive 2011/65/EU as amended. Both parts satisfy current regulatory requirements for hazardous substance restrictions.

Q: Is the operating temperature range the same for both parts?

A: Yes. Both E221SD1V4LE and E221SD1V4RE operate across -30°C to 75°C.

Q: Why is E221SD1V4LE listed as obsolete?

A: Product obsolescence reflects manufacturer discontinuation. E221SD1V4RE remains in active production and is the recommended source for new orders.

Q: Are there any differences in actuator appearance or feel?

A: Both components feature round plunger actuators with white coloring. Mechanical operation and tactile response are equivalent.